Grinding apparatus



Sept, 11, 1924s.

L. R. HEIM 'GRINDING APPARATUS Filed Feb. 8. 1921 5 Sheets-Sheel 1 Sept.1l, 1928. 1,683,974

l L. R. HEIM @BINDING APPARATUS Filed Feb. s. 41921 s sheets-sheet 2 4 37 Ill 9 t u m g W W 6, o 1 .m 0 uw i 3 W, M0 S 1 U` 2 M m w n a. H H v Rm M vwd m w ma m .m f ,d l L .IW E \\1/. l ,Il 4 VIHf n l N M .WH Tir Iu, v/ 5. M w m .n J @d Patented Sept. ll, 192.8.

UNITED STATES,

PATENT oFFiCE.

LEWIS R. HEIM, OF DANBUBY, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS,TO

CINCINNATI GRINDERS INCORPORATED, OF CINCINNATI, OHIO, A CORPORATION OFn OHIO.

enmmNG APPARATUS'.

Application led February 8, 1921. Serial No. 443,390.

This invention relates to grinding apparatus and more particularly togrinding apparatus adapted to grind the surfaces of cylindricalarticles. One of the objects of the invention is to provide practicalapparatus of the above nature capable of a broad field of eicient use.Another object is to provide grinding apparatus of ,compact andY simpleconstruction and efficient and n accurate action. Another object is toprovide a simple and effective attachment formed for ready connectionwith and removal from a grinding machine, and adapted substantially tobroaden the field of use of such machine. Other objects will be in partobvious and in part pointed out hereinafter.

The invention accordinglyconsists in the features ofl construction,combinations of elements and arrangement of parts which will beexemplified in the structure hereinafter described and the scope of theapplication of which will be indicated in the following claims.

In the accompanying drawings in which is shown one of various possibleembodiments of this invention,

Y Figure. 1 is a plan of the same;

Figure 2 is a sectional elevation taken along the line 2 2 of Figure 1;

Figure 3 is a sectional elevation taken along the line 3-3 of Figure l;

Figure 4 is a sectional view on an enlarged scale of parts appearing inFigure 3; and

Figure 5 is a sectional elevation taken along the line 5--5 of Figure 4.

Figure 6 is a erspective view on a small scale of the wor carrier.

Similar reference characters refer to similar parts throughout theseveral views of the drawings.

Referring now to Figure of the drawings, there is indicated a supportingframe or stand 10 of any suitable construction provided with a bed 11having ways 12 extending longitudinally thereof, Ythat is in a,Y

right-and-left direction with respect to Figure 2. On these ways ismounted a lower carriage 13 capable of movement by any suitable meansalongl the ways 12 as is com-` mon in the construction of ordinary ex-yternal grinders..

Upon the lower carriage 13 which is shown in plan in Figure 1 of thedrawings, is mounted a head stock 14 driven as by the pulley 15 withbelt 1G and provided with a suitable face plate 17.

The upper surface of this carriage is provided with ways indicated at 18on Figure 3 of the drawings, and slidably mounted on these ways is atail stock 19 provided with the ordinary means for adjusting itlongitudinally of the machine and clamping it in adjusted position--Mounted on a rearward extension 20 of the frame of the machine as shownin Figure 3 of the drawings is a'carriagc or slidable support 20asupported on ways 21 on which it may travel in a direction toward andaway from the bed 13 and with respect to which it may be locked inposition as by means of the bolt 22. This carriage is pro vided with apair of heavy bearings 23 for a shaft 24 driven by the pulley 2) andbelt 26 which is protected by a hood or housing 27. Shaft 24 carries agrinding wheel 28 which is driven at high speed preferably in thedirection indicated by the arrows in Figure 1 of the drawings. Bysuitable adjustment ofthe carriage 20 this grinding wheel may be movedto bring its operative surface at any desired distance kfrom the axis ofthe head stock and tail stock hereinbefore described. This adjustmentfurthermore not only provides for altering the point action of thesurface of the grinding wheel but compensating for any wear on thelatter part.

It w'll thus be seen that if work be mounted upon the centers of thehead stock and tail stock hereinbefore described and rotated by asuitable dog, its surface may be ground by bringing forward the rapidlyrotating grinding wheel to the desired point and moving the bed orcarriage 13 back and forth in a direction lengthwise of the inachine. Itmay also be noted at this point that this lower carriage or bed 13comprises upper and lower members 13EL and 13" respectively, whichalthough generally nioving as a unit are nevertheless relatively movableabout a vertical axis on the curved ways or guides 29 and 30. Thisprovision is made to permit the upper portion 13* of the carriage to heswung slightly into an Oblique relatinwith the length of the lowerp0rtion 13b and clam ed in such position. With this adjustment t e axisof the parts mounted onthe centers of the head stock and tail stock willbe correspondingly inclined with respect to the axis of the shaft 24,and upon a longitudinal movement of the carriage 13 with respect to thegrinding wheel, a surface of ,tapering form will be ground.` Obviouslthis angular adjustment may be employe to correct any deviation fromparallelism of the above axes when it is desired to grind a trulycylindrical surface.

Mounted u on the ways 18 as shown in Figures 3 and) 4 of the drawings,is a device or attachment in which certain of the more importantfeatures of this invention reside. This device comprises a 'recess orsupport 31 clamped on the bed in any desired manner, as by means of theca screw 31, and provided at its forward en that is toward the front ofthe machine, witha sleeve or bearing 32. Rotatably mounted in thisbearing is a shaft 33 threaded as at 34 and provided with a hand wheel35 and collar 36 respectively adapted to turn the shaft and prevent itsmovement in the bearing 32. This shaft 33 is threaded into a slide orcarriage 37 which travels on ways 38 formed on the support 31. As thehand wheel 35 is turned, the slide 37 is accordingly moved transverselyof the machine, that is, toward or away from the axis of the centers ofthe head and tail stocks. The slide 37 is yieldingly held in adjustedposition by means of a spring 39 interposed between the'head of a screw40 and a crossiece 41 which bears against the sides of a s ot 42 in thesupport 31,. through which slot the screw passes. There is thus exerteda yieldin frictional pressure tending to clamp the sli e 37 to thesupport 31 and yet permitting manual adjustment of the latter. Formed onthe slide, 37 is an abutment or flange 43 provided with a recess 44 inwhich there is held by the screw 45 a flat plate 46. Also mounted on theabutment 43 .as by means of the bolt 47 is a plate48 parallel to theplate 46. Clamped between these plates is a support or carrier for rolls49 having at its upper edge an inserted wear piece of hard steel 50.This carrier 49 as shown in Fi ure 6 of the drawin s, hasv preferably sustantially parallel sides or faces and may be positioned or clampedbeltween the plates 46 andA 48 (seeFig. 5) so that its upper surface isdownwardly inclined to any desired degree in a direction 28 is thereuponspeed and the wheel 55 driven at a rela- 125 Lesson along whichcylindrical objects may be fed and this trough may be in effect raisedor lowered with. respect to the horizontal lane of the axis of thegrinding wheel as ereinabove described and its inclination with For usein conjunction with the device above described, there is mounted on thecenters ot' the he'ad and tail stock and driven by a suitable dog, anarbor or mandrel 54 having fixed ythereon a wheel 55 which maypreferably be an emery wheel or the like. lThis latter Wheel is rotatedas indicated by the arrow in Figure l of the drawings, in what is termedthe oppositedirection with respect to the direction of rotation of thegrinding wheel. In other words. the operative surfaces of these twowheels co-acting with opposite sides of articles s pported on thecarrier 49 as hereinafter desc ibed, travel in opposite directions; thatis, the grinding wheel surface will move downwardly toward the carrierwhereas the opposin surface of the wheel 55 will move upwarly or awayfrom the carrier.

Considering now the action of this apparatus, it may first be noted thatit may be employed as hereinbefore described to grind cylindrical ortapering. surfaces of articles mounted directly on the centers of thehead and tail stocks in place of the arbor 54.

When this is done, the fixture or attachment 31 is removed and therinding wheel moved forwardly to co-act wlth the surface of the articlethus mounted. Suitable angular adjustment having been made between theup,-

per and lower portions of the carriage 13 110 the latter is moved backand forth longitudinally of the machine and a c lindrical or taperingsurface is ground. hen however 1t is daesired to grind a lar e numberof' articles such as the rolls 56, t e fixture 31 115 and trough 62 aremounted in position and the arbor 54 with itslwheel 55 mounted upon thecenters. The various arts are thereuplon .adjusted to fit the diameterof rolls w ich it is desired to grind and su port them in a positionbetween the oppose surfaces of the wheels 28 and 55 contactin therewithon the o posite sides. The whee (fiuven at a high rate of tively verylow.rate of speed. Rollers are then fed continuously to the trough 52and slide by gravity into the grip of these opposed wheels. The grindingwheel 28 simply 'grinds at a Vhigh rate of speed all sur- 130 thatallmatter herein set forth or shown in it contactstlius causing it torotate in the direction indicated by the'arrow in Figure 2 of thedrawings, and due rto the small diameter of the roll, this rotation issubstantially rapid. Furthermore the roll having an inclined relationwith vrespect to the axis 'of the wheel 55 as shown in the drawings,

the latter wheel tends to feed the roller longitudinally of the machinein a direction toward the left', having reference to Figure 2 of thedrawings. Also, the rate of feed may be varied by adjusting theinclination of the carrier with the horizontal, whereby the relativeinclination of the path of travel of the rolls with respect to thepath'of the surface of the regulating wheel 55 may be adjusted at willas hereinbefore described. Thus as each successive roll is broughtwithin the grip of the wheels, it is rapidly rotated and accuratelyground and automatically passes out between the left-hand pair of plates46 and 48 from which it is carried away by any suitable trough,diagrammatically indicated at 57. This operation may be carried on at ahigh rate of speed and it is to be understood that rolls or othercylindrical devices of various lengths and diameters may not only berapidly but accurately ground. Furthermore, as hereinbefore noted, themachine is readily adaptable to grindin0r larger parts more slowly or intapering orm by the mountin0r of such parts directly on the centers inplace of the arbor 54.

It will thus be seen that there is provided apparatus in which theseveral objects of this invention are achieved.

As' various possible embodiment-s might be made of the above inventionand as vari-- ous changes might be made in the embodiment above setforth, it is to be understood the accompanying drawings is to beinterpreted as illustrative and not in a limiting sense.

I claim: l

1. In apparatus of the general nature of that herein described, incombination, a grinding wheel adapted to be rotated at a relatively highspeed, means for rotatably supporting and driving said grinding wheemeans adapted normally to detachably sup'- port a cylindrical work piecefor rotation about a predetermined axis and to rotate said work piecerelatively slowly while said grinding wheel performs a grindingoperation thereon, a regulating wheel detachably supported in said -worksupporting and rotating means and rotated by the latter relativelyslowlyan'd in a direction to present an operative surface adjacent thatof thevgrind'- ing wheel traveling in a direction opposite from. thedirection of travel of the operative surface of said grinding wheel,thereby to form with said inding wheel a grinding throat for receivingwork of round section, and means for supporting work of round section inthe grinding throat formed by and between said adjacentoppositely-moving surfaces of said two wheels, whereby said regulatingwheel controls the rotation of said work of round section in saidgrinding throat while the grinding wheel performs a grinding operationthereon.

2. In apparatus of the general nature of that herein described, incombination, a grinding wheel, a regulating wheel, said wheels beingadapted vto present adjacent operative surfaces traveling in .oppositedirections, a carrier extending between Said wheels for supporting roundbodies in operative relation to the operative surfaces of said wheels,means for adjusting said carrier toward or away from the operativesurface `of one of said wheels, and continuously acting means for`yieldingly holding said carrier in adjusted position.

8. In apparatus of the general nature of that herein described, incombination, a ,grinding wheel, a regulating wheel, said wheels beinadapted to present adjacent operative sur aces traveling in oppositedirections, a carrier for supportin round bodies between the operativesur aces of said wheels, a carria e for mounting said carrier betweensaid weels and adapted to be, ad-

justed toward or away from the @erative surface of one of said wheels,and continu ously acting means for frictionally holding saidcarriage inadjusted position.

4. In apparatus of thc general-nature of that herein described, incombination, a grinding wheel, a regulating wheel, saiid wheels beingadapted to present adjacent operative surfacesftravelng in oppositedirections, a carriage mounted substantially between said wheels andadapted to be adjusted toward or away from' the operative surface of oneof said wheels, continuously acting means for yieldingly holding saidcarriage in adjusted position', a carrier for supporting round bodiesbetween the operative surfaces of said wheels mounted upon saidcarriage, and means for adjusting the relative inclination between saidcarrier and the path of the opera-tive surface of said regulating wheel.

5. In apparatus of the general nature of that herein described, thecombination, with an external grinder comprising a supporting frame, agrinding wheel rotatably mounted at the rear of said frame, and centersadapted normally to rotatably support work in operative relation to saidrinding Wheel, of means attachable to said rame and prolthat hereindescribed, in combination, a

e5 and a carrier extending between said wheel'si grinding wluel adaptedto be rotated at a relatively high speed,-.means for rotatablysupporting and driving said grinding wheel, means adapted normally todetachably snpport a cylindrical work piece for rotation about apredetermined axis and to rotate said work piece relatively slowly whilesaid grinding wheel performs a grinding operation thereon, a regulatingWheel detachably supported in said work supporting and rotatirig meansand rotated by the latter relatively slowly and in a direction topresent an 4operative surface adjacent that of the grinding wheeltraveling in a direction opposite from the direction of travel of theoperative surface of said grinding wheel, thereby to form with saidgrinding wheel a grinding throat for receiving work of round section, acarrier extending between said -wheels for supporting Work of roundsection in operative relation to the grinding throat formed by andbetween the oppositely-movingoperative surfaces of said two wheels,whereby said regulating wheel rotates the work in said grinding throatwhile the grinding wheel erforms a grinding operation thereon, an thepath of travel ofthe work axially along said work carrier being inclinedwith respect to the path of travel ofthe operative surface ofsaid rellating wheel, whereby the latter acts to fee the work along saidgrinding throat and past-said grinding wheel.

7. In apparatus of the general nature of that herein described, incombination, a mainframe, a Vrinding wheel, means for driving saidgrinding whcel'at relatively high speed, a head stock and a tail stockmounted on said frame and providing a live c`enter`and a dead centeradapted normally to detachably support a round work piece and to rotatethe latter relatively slowly about a predetermined ,axis, thereby topermita grinding operation to be .performed thereonby said grindingwheel, a regulating wheel detachably supported b said cent-ers anddriven from said head stoc relatively slowly and iig` a; direction'so1`that the adjacent operative surfaces' of said two wheels move in.opposite directions and form ainding throat for receivingl Work ofgrounsection, the driving connection between said regulating wheel and saidlive vcenter being detachable and including a dog,

for supporting `work of round section in operative relation thereto,whereby said regulating wheel controls the rotation of kthe work in saidgrinding throat, while the grinding wheel performs a grinding operationthereon.

8. In apparatus of the general nature of that herein described, incombination, a carrier for supporting round bodies, a grinding wheelrotatably mounted in operative relation to said carrier and on 'one sidethereof for grinding said bodies, a regulating abrasive wheel rotatably!mounted on the other side of said carrier for rotating said round bodiesduring .the operation thereon by said grinding wheel, said`wheels beingadapted to present operative surfaces traveling 1n opposite directions,and means for adjusting said regulating Wheel in a direction lengthwiseof said cylindrical body relative'to the operative surface of said^`grinding wheel.v l

9. In apparatus ofthe general nature of that herein described, incombination, a carrier` for supporting work of round section, a grindingwheel rotatably mounted in operative relation to said carrier and on oneside thereof for grinding said work, a peripheral regulating abrasiveWheel rotatably ,mounted on the other side of 'said carrier for rotatingsaid work of round section durino the peration thereon by said grindingWheel, ,said wheels being adapted to present operative surfacestraveling in opposite directions, means for adjusting said regulatingWheel in an axial direction relative to the operative surface of saidgrinding Wlieel, and means for adjusting the operative surface of saidgrinding wheel toward or awa from the operative surface of saidregulating wheel. I

10. In apparatus ofthe general nature of that herein described, incombination, a inain frame, "a grinding wheel, means for driving saidgrinding wheel at relatively high speed, means on said frame adaptednormally to detachably support a round Work piece and to rotate thelatter relatively i slowly about a, predetermined axis while the grining wheel performs a grinding operation thereon, a regulating wheeldetachably supported by said last-mentioned means and l rotatedrelatively slowly thereby and in a direction such that the adjacentoperative surfaces nof said two wheels travel in opposite directions, acarrier extending between said wheels for supporting work of round wheeland to cause said two wheels to form a grindin throat for receiving workof round section.

11. In apparatus'of the general nature of that herein described, thecombination with an external grinder comprising a supporting frame, aperipheral grinding wheel rotatably mounted at the rear of said frame,and centering and driving means adapted normally to detachably supportand rotate relatively slowly a cylindrical work piece for rindingoperation thereon by said grin ing wheel, of means attachable to saidrame and providing a carrier for supporting round bodies adjacent to theperipheral operative surface of said grindin wheel, and a regulatingabrasive wheel a apted to be rotatably and detachably supported on saidcentering andr driving means and in juxtaposition to said grinding wheeland adapted to be driven by said centering and driving means at arelatively slow speed and in a direction so that the adjacent operativesurfaces( of said two wheels travel in opposite directions, whereby saidregulating wheel rotates said round bodies in said grinding throat whilethe grinding wheel performs a grinding operation thereon.

12. In apparatus of the general nature of that herein described, thecombination with an. external grinder comprising a supporting frame, aperipheral grindng wheel rotatably mounted at the rear of said frameanda head stock and a tail stock each providing a supporting center fornormally detachably supporting and rotating a round work piecerelatively slowly and about av predetermined axis for action thereon bythe peripheral operative surface of said grinding wheel, of-

means adapted to be secured to said frame and providing a carrier forrotatably supporting round bodies adjacent to said grinding wheel, and aregulating wheel adapted to be mounted on and driven at a relatively lowspeed from said centers on said head stock and tail stock and having itsoperative face juxtaposed to that of the grinding wheel. thereby to forma grinding throat for said bodies on said carrier, said regulating wheelbeing driven in a direction so that the adjacent operative surfaces ofsaid two wheels move in opposite directions and acting to control therotation of the body in said grinding throat.

13. In apparatus of the general n ature of that herein described, thecombination with an external grinder comprising a. supporting frame, aperipheral grinding wheel rotatably mounted at the rear of said frame,and a head stock adapted normall to have detachably connected thereto anto rotate relatively slowly a round work piece in operative relation tosaid grinding wheel and while the latter performs 'nding upon the workpiece, of a carrier a apted to support workpof round section adjacent tothe peripheral operative surface oisaid grinding wheel and detachablymounted upon the frame, and a regulating wheel detachably mounted inconnection with Said head stock in juxtaposition-to said grinding wheelto form a grinding` throat with said. inding wheel for receiving thereinwork o round section on said; carrier, and driven from said head stockat arelatively low speed and in a direction to present an operativesurface traveling opposite from` the direction of travel of theoperative surface of said grinding wheel, whereby said regulating wheelcontrols the rotation of said work in said grinding throat duringgrinding action thereon by said grinding wheel.

14. In apparatus of the general nature of that herein described, thecombination with an external grinder comprising a sup rting frame, aperipheral grinding wheelxiotatably mounted at the rear of said frame,and a head stock and a tail stock, said head stock being adaptednormally to have detachably connected thereto and to rotate relativelslowly a round work piece and said tail stool; being provided withasupporting center for said round work iece, whereby the latter isrotated relativeljy slowly about a predetermined axis during grindingaction thereon by said grinding, wheel, of means adapted to be securedto said frame and providing a carrier for rotatably supportingcylindrical bodies ad'acent to the peripheral operative surface o saidgrinding wheel, a regulating wheel detachablyl mounted in connectionwith' said head stock in juxtaposition to said grinding wheel to formtherewith a grinding throatfor receiving said bodies on said carrier anddriven relatively slowly from said head stock and in part supported uponsaid tail stock center, thereby to control the rotation of saidcylindrical bodies in said grinding throat and duringoperation thereonby said grinding wheel.

15. In apparatus of the general nature of that herein described, incombination, a main support adapted to be detachably secured to the waysof a machine, a carriage mounted on said support, means for adjustablymoving said carriage on said support and in a direction transverse tothe direction of said ways, a work carrier extending in the generaldirection of said ways for supporting round objects, and means formounting said carrier on said carriage adapted to permit verticaladjustment thereof with respect to said ways. Y

16. In ap aratus of the general nature of that herein described, incombination, a main support adapted to be detachably secured to the waysof a machine, a carriage mounted on said support, means for adjustablymoving said carriage on said support and in a direction transverse tothe direction of said Ways, a work carrier extending in the generaldirection of said ways for supporting round objects, and meanscformounting sald carrier on said carriage adapted to permit adjustment ofthe inclination of said carrier with,k the horizontal.

17. In apparatus of the general nature of that herein described, in,combination, a main support adapted to be detachably secured to the waysof a machine, a carriage mounted on said support, means iforadjustablymoving said carriage on said support and in a direction transverse tothe direction of said ways, a work carrier extending in the generaldirection of said ways for supporting round objects, and adjustablemeans or mounting work carriers of different Widths on said earria e.

18. In apparatus o the general nature of that herein described, lincombination, a main frame provided with ways extending` longitudinallythereof, a tail stock and a driving headv stock provided withcenters'mounted on said ways, an auxiliary Iframe providedwith waysextending transversely of said first-mentioned ways, a grinding wheelrotatably mounted on said transverse ways and adjustable thereon towardor away from said first-mentioned ways, a regulating wheel detachablymounted in operative relation to said grinding wheel on said centers andadapted to be driven from said head stock, said wheels being adapted topresent operative surfaces traveling in opposite directions, and a workcarrier extendin Vbetween the operative surfaces of said w eels anddetachably ymounted on said longitudinally extending ways.

1-9. In apparatus of the general nature of .that herein described, incombination a main frame rovided with ways extending longitudinallythereof, a tail stock and a driving head stock provided with centersmounted on said ways, an auxiliary frame provided with ways extendingtransversely of said first-mentioned ways, a grinding wheel rotatablymounted on said transverse ways and adjustable thereon toward or awayfrom said first-mentioned ways, said centers being adapted normally torotatably support cylindrical work to be positively rotated rom saidhead stock and to be operated upon by said grinding wheel, a earner forAsupport- Qing round work ynotadapted to be mounted on said centers ofsaid head and tail vstocks and for carrying said work' in operativerelation tov said grinding wheel, means for mounting said carrier onsaid frame in operative relation to said grinding wheel, and aregulating wheel adapted to be mounted on said centers and driven fromsaid head stock to rotate said round Work on said carrier, Said Wheelsbeing adapted to present operative surfaces traveling in oppositedirections.

20. In apparatus of the general nature of that herein described, incombination, a main frame provided with ways extending longitudinallythereof, a tail stock and a driving head stock provided with centersmounted on said ways, an auxiliary frame provided with ways extendingtransversely of said first-mentioned ways, a grinding wheel rotatablymounted on said transverse ways and adjustable thereon toward or awayfrom said first-mentioned ways, a regulating wheel mounted in operativerelation to said grinding wheel on said centers and adapted to be drivenfrom said head stock, said wheels being adapted to present operativesurfaces traveling in op osite directions, a work carrier extendingetween the operative surfaces of said wheels and adjustable` toward oraway from one of said wheels, and means 'for detachably securing saidadjustable work carrier to said frame.

21. In apparatus of the general nature of that herein described, ,incombination, a main frame provided 'with ways extending logitudinallthereof, a tail stock and a driving hea stock provided with centersmounted on said ways, an auxiliary frame provided with ways extendingtransversely of said first-mentioned ways, a grinding wheel rotatablmounted on said transverse ways and a 'ustable thereon .toward orawayfrom sai first-mentioned ways, a regulatln wheel detachably mountedin operative re ation to said grinding wheel o said centers and ada tedto be driven from rsaid head stock, sai wheels being adapted to presentoperative surfaces traveling in opposite directions; a supportdetachablyse' cured to said longitudinal ways, a carriage extending substantiallybetween said two wheelsmounted on sald support and niovable fthereontoward or awa from one f said wheels, and a work carrier mounted on saidcarriage for supporting work of round sectionV in operative relation tosaid wheels.

In testimony whereof, I have signed m name to this specification thistwenty-tourt day of January, 1921.

` LEWIS R. HEIM.

